10 January 2018

Silberra Ascorol

Silberra pro­vi­des a tab­le1 with de­ve­lop­ment times for its Micro-F
de­ve­lo­per. Some of the times lis­ted there seem to be in­con­sis­tent: the de­ve­lop­ment time for the film Arista Edu Ultra 400,
which is known to be the same as the Fomapan 400 and the Holga 400,
dif­fers by half a mi­nute.

10 January 2018

Silberra Ascorol

Silberra pro­vi­des a tab­le1 with de­ve­lop­ment times for its Ascorol
de­ve­lo­per. Some of the times lis­ted there seem to be in­con­sis­tent: the de­ve­lop­ment time for the film Arista Edu Ultra 400,
which is known to be the same as the Fomapan 400 and the Holga 400,
dif­fers by one mi­nute.

03 April 2017

SPUR's Datenblatt für Speed Major

According to the data sheet1 of SPUR Pho­to­che­mie,
one should be able to in­fluence the con­trast of the ne­ga­tive by vary­ing the ad­jus­ted film speed, the
di­lu­tion of the de­velo­per and the de­velop­ment time. This can current­ly not be map­ped by the app and
would lead to in­con­sis­ten­cies in the es­tima­ted de­velop­ment times. There­fore, only the de­velop­ment times of
the ta­ble were taken, which leads to a 'nor­mal' ne­ga­tive con­trast. The es­ti­mates of de­velop­ing time
cal­cu­la­ted by the app for de­via­ting set­tings should there­fore also pro­duce a 'nor­mal' ne­ga­tive con­trast.

October 18 2016

ADOX Adotech III

ADOX provides two datasheets for the film ADOX CMS II containing times for developing in Adotech III, one in German1 and one in English2.
The two datasheets differ in the specified agitation scheme. While the German datasheet says: “Die erste halbe Minute ist die Dose permanent …, danach jede halbe Minute 1 mal …”
(The first half minute ongoing …, than once every half minute …), the English translation shows: “First half minute ongoing than once every minute.”.

After contacting Mirko from ADOX, he wrote me that the agitation scheme of the English version of the datasheet (once per minute) is the correct one.

References:

ADOX CMS 20 Hochauflösungsfilm (May 2016)

ADOX CMS 20 Ultrahigh-Resolution-Film (August 2016)

June 28 2016

Kodak – Film Names

Kodak has launched new versions of some films on the market in 2002, 2003 and 2007.
In many development charts, even in very well-known, these versions are not distinguished, although their developing times have changed.
There are often listed as Plus-X , T-Max 100, 400, 3200
or Tri-X with mixed times for old and new versions of the films. You have to be very careful
to find out the correct time. You are safe looking up the times at the
Film Development Chart.

June 28 2016

Uncle Mort’s Homebrew and Promicrol

The development times of Uncle Mort’s Homebrew Neg Soup
developer are substantially identical to those of the Champion Promicrol.
The data sheet of Promicrol1 and the times at the bottle
label of Uncle Mort’s Homebrew2 match exactly
for 12 of the specified films. The indicated times of Promicrol apply
partially for different film speeds (pushs) of the films. At the label of the Homebrew
no film speeds are specified for the given developing times. The following table lists the identical development times
of the two developers (dilution 1+9, temperature 20 °C/68 °F, agitation 30 s).

The two developers therefore appear to be very similar. The times of Promicrol
originate from 2003: The times for the Kodak films therefore apply
to the respective predecessor films.
The Promicrol developer allows 1+14 dilution. You can lookup the developing
times for this dilution in the Film Development Chart.

April 10 2016

Variants of the Rollei RPX 100/400

The films Rollei RPX 100 and Rollei RPX 400 were respectively sold under the same name with different recipes.
This is confirmed by the different developing times of different data sheets1,2,3,4. In December 2013 these
films were given a new packaging: Black background with green respectively red label. At the same time the films
AgfaPhoto APX 100 and AgfaPhoto APX 400 were placed on the market. The development times of the Rollei RPX 100/400
films with old packaging were identical or at least very similar to those of AgfaPhoto APX 100/400 and
Kentmere 100/400 .

References:

MACO Photo Products, Rollei RPX 100 product sheet (Nov 2010)

Rollei, Technisches Datenblatt Rollei RPX 100 (Apr 2015)

MACO Photo Products, Rollei RPX 400 product sheet (Nov 2010)

Rollei, Technisches Datenblatt Rollei RPX 400 (Apr 2015)

March 23 2016

Tetenal's datasheet for Paranol S

Tetenal provides a datasheet1 with developing times for its own
Paranol S developer. Some of the times listed there are surprising:
Tetenal stated that this developer is ‘compatible’ with
AGFA Rodinal, but the developing times differ
very much, especially for dilution 1+50. For our database we assume that these developers are not equivalent.

Table: Divergent developing times for Paranol S and AGFA Rodinal.

Film

ASA

Dilution

Agitation

TetenalParanol S

AGFARodinal

Fomapan Classic 100

100

25

30

4:001

3:302

Fomapan Creative 200

200

25

30

5:001

5:003

Fomapan Action 400

400

25

30

7:001

5:304

Ilford Delta 100

100

25

30

14:001

9:005

Ilford Delta 100

100

50

30

40:001

14:005

Ilford Delta 400

400

25

30

12:001

9:005

Ilford Delta 400

400

50

30

40:001

20:005

Ilford Delta 3200

3200

25

30

23:001

11:005

Ilford Pan F Plus

50

25

30

17:001

6:005

Ilford Pan F Plus

50

50

30

36:001

11:005

Ilford FP4 Plus

125

25

30

11:001

9:005

Ilford FP4 Plus

125

50

30

30:001

15:005

Ilford HP5 Plus

400

25

30

11:001

6:005

Ilford HP5 Plus

400

50

30

25:001

11:005

Ilford SFX

200

25

30

5:001

6:005

Ilford SFX

200

50

30

12:001

10:005

Rollei RPX 100

100

25

30

9:001

9:007

Rollei RPX 100

100

50

30

18:001

18:007

Rollei Superpan 200

200

25

30

3:001

8:009

Rollei Superpan 200

200

50

30

8:001

17:009

Rollei RPX 400

400

25

30

11:001

8:008

Rollei Retro 400S

400

25

30

4:001

10:306

Rollei Retro 400S

400

50

30

7:001

22:006

References:

Tetenal Product Information Sheet: Paranol S (May 2015)

FOMA Bohemia Ltd.: Fomapan Classic 100 Developing Instructions

FOMA Bohemia Ltd.: Fomapan Creative 200 Developing Instructions

FOMA Bohemia Ltd.: Fomapan Action 400 Developing Instructions

Ilford Film Processing Chart (Apr 2015)

MACO Photo Products, Rollei Retro 400s Entwicklungszeitentabelle

MACO Photo Products, Rollei RPX 100 product sheet

MACO Photo Products, Rollei RPX 400 product sheet

MACO Photo Products, Rollei Superpan 200 product sheet

January 30 2016

Development Times of Protopan 400 in Agfa Studional

The development chart of Protopan 400 lists for the developer AGFA Studional (AGFA Studio Liquid) times at a dilution of 1+30. This is a rather atypical dilution for this developer and is considered to be a typo. Instead, it should probably be 1+31.